Two-cycle gas engine



April 5, 1927.

B. F. AUGUSTINE `Two-CYCLE GAS ENGINE Filed April 26. 122 I l'7 sheets-sheet 1 April 5,1927. 1,623,296 l B. F. AUGUSTINE Two-CYCLE GAS EN'GINE Filed Abril 25, 1922 7 Sheets-Sheet 2 April 5, 1,927.

B. F. AUGUSTINE 'Two-CYCLE GAS ENGINE' med Apil ze. 1922 'r sheets-sheet gnvenof.

Ill-

1,623,296 Y B. F. AUGUSTINE l Two-CYCLE GAS ENGINE April 5 1927.

Filed April 26. 1922 7 Sheets-Sheet 4 J @NW mm, NN HV l N EN Nw 5N www m, N bw mq. Y f mw Nw NW bm P .www .f/ w aonuwuu v 4 ,W m..%\. NW. MH. P f 9 9 a Nv@ @N lmvmv .r .f e d April "5,1927. l l

l y y B. F. AUGUSTINE Two-CYCLE GAS ENGINE Filed Anrdil 26. 1922 '7 sheets-sheet b.

April 5 l1927.

B. F. AUGUSTINE TWO-CYCLE GAS ENGINE .m w m@ Nb qw. A o .w ol V55 a a .wf Mm uw R ASW. N R e Nmd KMU QN m NN .,I 4NN 5v5. m

April 5v, 1927.

B. F. AUGUSTINE TWO-CYCLE GAS ENGINE 7 Sheets-Sheet 7 Filed Avril 26. 1922 Sammy Patented ANAS, 1927, Y v 1,623,296?

FFNJAMFN' FNANFLFNAUGUSTINF, oF' BUFFALO,` NFWYORN, AssIGNoR To'` Ariens- TINE AUTOMATIC'NOFANY ENGINE ooMFeNv, oF BUFFALO; NFwfYome, A' CON-...f FoF'ATIoNoF NEW YORK;

TWo-oYeLEGAs ENGINE.

Appncauomfnea Aprnze, 1922. sentirmi 556,740; i

The#invention-relates to new and. useful above typev Withf means-fonsupplying.fl i'. improveinentsfin a two-cycle engine.. Y oylinden withVV fuel@ gases a-tlrelatively low-fv An object offtheinvention is tofprovide a pressure and: continuously -whil'ei s-ai'dinta'kee tworcycle: engine which isy constructed: and portie ope-n. y e 5 timed` so; that the expansion; and exhaust Af stili .further obiect.Y of the in'ventioliia` occursz on oneY 'strokeV of the piston, While toprovide ay Vtwo-cycle gas4 engine of@ the'.k the'eharging; and compression occur. upon abovetype,l wherein the gasesv are Vsupplied; the otherstroke of.r thepiston. tofeach cylinder by a purnplhavingl a1 largerfY A. 'further object ofthe invention is tov capacitythan the-capacity of" the engine? 5 provide;atWo-cycle gas; engine of the above cylinderg/ so that' a superoharge may be sup).-v

type having intakev and exhaust ports iny plied thereto. Y Y itially, controlled by the piston. y v A. still further object of the'inventio'n'v- Y Af still furtheu object of the invention is Yto provide a. two-cycle gas engine; of the to yprov-ide atwe-c'ycle gasengine-having..in abovetype.wherein there iis. afpumpfor( each60 ,take andA eXhanstports uncovered by the Cylinderand'the p'urnpisrtimedsovastosupf .pistonsw'ith inea-ns assoeiated therewithandk ply theA cylinder with fuel gasesfwheni the,Y timed so that the exhaust and expansion ofl intake port isv openat relatively low the gases takes place on onestrokeof. the pressure.` Y t piston; while-the charging and` compression A still furtherl object ofthe-inventioni isv 6. o the gases-take place-,onthe other stroke to provide a. two-cycle gas engineofftheA l,of-the piston. above typ e, wherein-:each pumpfon supply.-` Af still' further object' of? the` inventionl is ,ing the cylinders is .provided 4Witlraf movable to provide a tivo-cycle. gas engine .of the piston, and said-pistonis provided in turn. abovetype,V wherein' the exhaust port isn with aby-passsodisposedaetobe connected.. 7ov

covered by. n'ieansindependent of the piston with the'intake.portfonlyduringrthev chargdur'in-gf,substantially the entire period ofthe cylinder. i ch'argnigand compression. y rIlhese and other` objects-lW-ill in, vpart be.

L stilli'urthen object of the inventionis obvious and Willfin part be hereinaftermore; 75 tolY provide a two-cycle gas engine of the fully disclosed.

and'l timed sof as.`to close the exhaust portV Ving, and'rcompression stroke offthe piston of: 1

abovetypje, wherein the intake port is un. In the drawingsjvhich Vshow Way of.. covered bythe piston land wherein auxiliary illustration one einbodinfient.' of` the inven` means is provided for covering said intake tionf A pent, which auxiliary meansis timed so. as to Figure l. is a.. View partly in longitudinal-180- maintain VsaidI intake port covered during section' and partly in side elevation shovving the-.exhaust period and While .said exhaust an engine embodyingmy. improvements; f port. Open.. Q Fig; Q'isa view partly Vintransverse sec- A- still iiu1tl1erobjectl of `the invention istionand partlyfin endzelevation", theseotions to provide a twocyclegas engine having; in* being; taken. at various points ofthe cylin 85 take` and exhaustports, means 'for conders and the pumpstoaidin showing the trollingy saidports whereby lsaid 4exhaust timing` of the parts; g. i port isA closed Whilelthe intake port is open, Figi. is aview more or'less diagrammaticV andL said. intake port is yclosed Whilethe in .section through..V one pair. of.. cylinders andi exhaust port is open. the pumps associatedv therewith andjshoW-.QO A still further object ofthe invention. is ing thepistonsatthe pointA Where the burnt to1provideaf two-cyclegasfengine of thel gasesare being'releasedg.

Y Fig. is a Sinaai# View butshowmg um cylinders completely scavengedand the 1n- VYtake port-"just'about Vto be uncovered;

ig. 5 is a similarr'vievv but showing the cylinders asghaving Vbeenftully charged;

VFig. 6 is aY similar View but showing the igases compressed and ready for firing, and

j Y Fig. -7 is a diagrammatic View transversesl .Y lythro).1gh `V theengine showing the several 1 cycle of operation., Y Y

.;Fig.. 8V isa detailin section shoWingthe sealedI eonnectionbetween the rotating part rgof, the exhaust chamberf andthe stationary lp'artgot'theengine ,cylindersV and the relative conditions in Vthe .Y "Theinventionr,is Vdirected broadly tor af il two-cycleengine wherein the 'cylinders may Vjbe "stationary -rorfmounted to rotate, a1,- fthoughj I prefer to embody my-invention finan engin-eofthe rotating radially dis- Jjfpos'ed vcylinder 1 type. y

f, f alsobe'embodied in ani engine having a cylinder Witha single piston, Which cylinder A! 4is 'providedwith' intakeand exhaust ports, 4although here again, I prefer toembody the 5 invention in an engine which Vhas yconnected tvvincylinders with a piston tor-each cylin-y der, Whichfpiston andcylinder have relative .V movements.. .Thenagaim Whilev the yinven-V tion maybe embodied in a twin cylinder Vengine Vhaving intake and Yexhaust ports controlled in various Ways, -I prefer a type'of engine wherein theintake and'exhaust ports The broad invention consists in a two-cyclev engine `which is provided. with devices are ranged` so that the charging ofthe cylinder andcompression of theg'asestake place on are initially opened bythe pistons.

oneV stroke'o'f thev piston, .While the expan-` sionand.exhaustion of the gases takesV place.

on the-other stroke Vof the piston, which in' effect, divides-the cycle ofthe engine into separate and distinct;periods-similar to the results" obtained inf a fours-cycle engine, and this gives vample 'opportunity 'for the hot burning gases tofbegexhausted from the cyl-` inderbefore the new char-ge enters the cylinder.V `:In theV preferred-form of the invenf mitssthe gases vto be supplied in such Vquantityas to produce superinduction 'or a f one-hundred percentA charge `'regardless 'of Hatmospheric conditions. i

V'This control of thelexhaust ports in a Y ggfrotating engine ispreferably'.accomplished They invention may v cessive Vpressure of the 'gases'. Y takes Vits charge directly from` the carbuby the pistons, and the exhaust ports are of such dimensions that the ports begin to open sixty ydegrees before the piston controlling the same reaches theend of its'inner stroke,

and by providing auxiliary means which is operated Vindependentqot the movement ot' the piston for closing the exhaust port just as the piston reachesl the end of its stroke. Ot course, it will be understood that'this speciiic timing stated of sixty 'degrees .before the piston reaches the end of its stroke may be varied Within certain limits'V and on `the l' other hand, adjustable means may be provided for closing the exhaust port at' slightly ydifferent times in order t0 get the best results.' The timing stated is approximate. 'p v, Y Y I l 1 The` areaiotl theexhaust port is of ample capacity to relieve-the cylinder of the ex-V' haust gases, which are, ofcourse, under rapid vrushing ot the exhaust gases out Vslight pressure, almost instantly, and the fV through the exhaust port-when itis opened,

scavenges the cylinder, andas aV matter of ffact', produces a partial vacuum therein.v

I have foundV` by experience thatV this gives-ample time to scMenge the cylinder' of the burnt gases. expedient'to leave the exhaustport open for a short ntime during the initialentering of the charge1 so as toffurther scavenge the lcylinder of any possible remaining burnt gases. "This, ot course, can be accomplished I may, however, find itH by slight adjustment oit the auxiliary means 'for controlling the auxiliary cut-ott'` for the exhaust port.y

VThe gasesY are supplied tol eachy cylinder by means ot' a pump,- and this pump has a larger capacity than the capacity of the cylfV 105,. Y

inder with which it is associated so as to insure that ther cylinder will be quickly supplied to onefhundred percent or more,A if

desired, thus insuring. a complete chargeV under open throttle, and a superchargeyif desired.l vThis makes the engine very elnclent When YWorking under lowatmospheric 11oVA conditions, as for example, in high altitudes. I prefer to use a pump. having a pistonl sliding relative to the pump cylin-` der 'and timedin itsmovements ninety dei grecs or thereaboutsiin rear of the engine piston. This'enables the intakeportto be held closedv during the entire expansion strokeot the engine piston before the pumpV supplies its charge to the cylinder, and therefore, the gases will be put under little pressure inthe pump before they are transmitted to the cylinder. The portsleading toY and from each pump cylinder are alsol vrelatively relatively large lwhich further provides ample clearanceso asto avoid ex;

The pump I retor and has capacity for substantially'only a single charge soy that the engine responds v time; I1 am able tot supply a: charge to theV cylinders r` whichv isi proportionate to the vigeafsgae'ei very readily 'to the throttle, L and ati jthe same throttle'conditions- Under full load, the

fcylinder` will; be supplied with" a hundred percent .'charge.` .Further-more, the pump Works und'en|` very,v lowf pressure andf there'- fore,v there' is.` substantially no loss through A pumpinge'under pressure,that is, due to thev com-pressionand expansion of gases before they` l are transferred) to the cylinder'.

It,A will also Abe -note'dthatf the suction port for the-pump through which the charge is drawn into-the pumpl cylinder is so disposed as to'be fclosed Abyfthepump piston before the intake .port closes, andV this enablesl a substantially complete` discharge jofr the fue-li port is openediby ythe relative movement of' th'efpistonof'` the engine `cylinder. on its eX-l pansionastroke and-the byl-pass operatesv to connectihechamber. at the outer end of the pump cylinder'with the engine cylinder during the time-that theintake port is open on thef' charging and compression stroke of' the pist-onsof the engine. The by-passin the pumpV piston is; directly in; rear of the portion of the piston1\vhiclicloses the intake port andlthenefore, f the heat of Vthe burnt` gases aidsin. gasifying. the charge, as it enters ithe: cylinder.'

It' willi be; not-edathat the compression rings' at-thesexhaust: side of the engine and in and about-fthe relativelyA movable` parts .which Y f i sides ofY the ring; They rings, otcourse, are@ otrsiicli dimensions as :to bey apparentlyfree,.- ini the groovesv therefor.

:In-my prior PatentlrNo. .1,229,5G9,.granted June 12,1917, I1 have shown andl described in,-detail:5 ai rotary two-cycle engine, ofthe twincylinderrtype, and: wherein the cylinders-iareffired@ inv the 1f, 2, 3,:etc.,lorder1, that is,-. inisuccessioni Iny my cof-pending application', SerialrNumber; 430,878.r filed? Deceni-l `berf 15,:1920, I' have shown and described an improvementl in. tlieinvention set forth in said.` prior' patent;` lllie present invention is a stillzfurthenl improvement upon thisV sameV Vtyqfie'ofr engine-and reference may be had tothef prior patent and the pending application for a general.s armingementandA oper# ationof the parts. Y t The present engine includes-.a-rotating casing l havinga pluralityof radially disposed twin cylinders indicated `at 2, 3,' 4,5,6 and i7.k `70e (see Fig.' 2). The twin cylinder 2includestwo cylinders 2a and 2P whichzarepreferably i cast? together, but"` separated so=that afirma pass readily betweenthe cylinders. Between thecylinders and on. the outer' wall' o'f the7t'i cylinders there are radiating fins These' cylinders@ are secured to the casingl l andi project radially therefrom. an-d rotatefwithv thev casing; Each pair-L'offtwin cylindersgarel l similarly constructed, and:l the; descriptionrso! for` oneV pair will` answer for.' theA othersaf' InA the cylinder 2b' tliere'is a pistonv 9and. inl the cylinder 2" there is a piston 10.'` Gori@- nectedftofthe piston 9 is. apiston' rod 112l andi to the pistonlOis apiston rod 12. These" 851` piston rods are in turn connected to.v orossr bars 13.- It Vis understood that therefis` a cross bar l'for each'pa-iroftpistons. Aflsoe connected with each bart 13= are rings1l47 These rings are placed siide-bysideand bei 903 tween the rings 14 andithefcrank. lt'rareaz` series of ball'bearings 16i They crank liisformed integral with the shaft. 17 which:is station-ary so; that the crank is" stationary,

and the casing and the cylinders rotate 952-1v around said crank. Said ca-singiis mountedr" on a ballV bearinglS- on thestationaryishaftQ l?. There-isalso a ball bearing l9'between the web 2O forming-a part of the casing; andr the section 2l which is part of the .sl'ia-ftiflf. 100'?TA The cylinder 2" is providedwith-an intake i port 22, and the cylinder: 2a: isprovidedrwith i an exhaust port 23. The intake andlexh'aust ports are so disposed astobe coveredand` uncovered by the pistonssothat saidfports' 105*kk are in part controlledbythepistons` The casing 1 is provided with a 'chamber'24 Vwhich is connected with the lexhaust'port 23` so that the Vexhaust gases pass outi into the chamber 24. chamber 24 rotates; A; stationary 'inember 25 is formed with a passage26' adapted yto receive the exhaust gases from the-chamber 24. Said member 25V is formed with acir'- cular iange 27 which overlies they casingtlltr:

forming anv outer wall ofvtheffchainbera'24i `Said outer wallj of the chamber" 24 'is\pror f vided with al seriesof. grooves, in; each of which is a sealing ring;28. The meinber-25``v also hasan inwardly extending.:circularpor?i 120e tion 29 and the casing lextendsunderneath this* circular portion 29andA is 4 shaped to'. I conform thereto. The casing a seriesl of grooves in which are'placedfsealing: rings I 30.- T-liese Sealing: rings28'fand1` SOlit'fcomf 152? paratively loosely in'jtlie grooif'es andfthegrooveiall open outwardly away. from the axisofrotatioii of the casing, Any rotation a of the sealing rings will tend to'expand :the:` saine, andA cause saidiringsto friztionally` 13u? The casing containing the'llofi." '1 griptheoverlying circular members 27 and 'i threesides of theirings.'` f f Y VVLocated' Within the chamber 24 is an ad- Ijustable ivvebbed member 3l which carries-an ports. This Vring '32 and the Web supporting the same is stationary, but as above noted,L adjustable. The ring 32 has a suitable yopen-V l 'v Y fing as'gis clearly set forth .in my prior ap-f 'plicatiom which Vis at;V times, brought into V register With the exhaust-y ports 23 so that the burnt gases may readilyescape through Y :through the passage6. The path of move# ment ofthe burntgases is indicated by the farrotv. line in Fig. 3 of the drawings.k ,Y Associatedwvith eachpair of cylinders is vofv my invention are iii the form of reciproenginefcylinders, but fis iii part. spaced slightly.therefromzaud provided with conl V-nectiiig radiating. Yveins 34.V 'lliehprunip'cyl-v inderf33 isfprovidedwith an vintake port 35..

. VIn thepumpc'ylinder isV al piston 36, to'which .Y is `connected a piston rod 37.:` It is underfstoodlof" course, tliatthcre are six pumps in asiX-cylinder engine, aiidtherefore, ltherev "fare six;l piston rods 37. l These piston rods Vareconnected to cross bars V36, each ot which lringsare 'so disposed as to be nested side by Y. side,,andibetween these rings-and the ste.-V ti'ona-ry crank V40 is a series of ball bearings Y' Y41.2"fl`he crank 40 is formed separate from,

Y jnjbut-is'rigidly connectedfto'the shaft section 2l so thatit is held frominovement by tire isan inwardlyextending member'provided f bearing .'44lis placedbetween vthe bearing on the" end of the crank :and the member 43.

48 to the chamber 46. vLocated Within .thev

`-jcasing is fa stationary` ported controlling sealing. rings Where the sealingy area is on j annular ring 32 adapted to close the exhaust..

the opening to the chamber 24 and 'outV p about to draw in a charge. Y

ja pump. .The puinps'inthe preferred form f,catingrpiston:pumps.l The cylindersffor the: 1 pumpV associatedwitli the twin engine cylinders 2** and 2b, is indicated at VV33. `Said Acylffinder is preferably cast in block with the;

isprovided With Vavpair of 'rings 39, and the Y p V40 means .Which holds-the shaft V17 stationary.V -Atgth'e right-hand 'eiidfofthe'crankv 40, there n -with'fa bearing142.79Y This bearing extends.

into a recessi'ngthe member 43 and a ballv The member 43 is ,secured tothe end:o'l,.i'liel V` asfto PQVde azchamber 46. Surrounding member 49. This member is held from rotation by meansofpins and 5,1 carried s Y byaldisk 52 fixed to the end' of the shaftV 40.

VBali bearings V53 are" placed between this i portedinember 49 and lthe sleeve s'haft'45.V

.n The rotating casing is Yprovided With ase? ries'of ports 54 and pipes 55 leadfrom these. ports 54 to the pump intake ports There'.k t

is a singleport 56 in the portedii'ieiiiber 49 which is at Vtimes brought into yregister!With the ports 54, and thus .connects the 'pump cylinder with the passage 46 and the carburetor. Said ported vmember therefore,v serves -as the controlling member for :cute

ting the pump cylinders o' vfrom the fuel supply, but also serves as a means for consupply at the proper time when the vLocated in the pump piston 36 passport 57.V This by-pass port opens at 58 and 59k :through the outer Wall ofthe pis.-l

of the intake port. The pumpV cylinder is providedwitli a icy-pass port 6l'.r

Each pair oftvvin cylinders is 'preferably vnectingthe pump cylinders With the fuel t pumpis providedivitli twospark plugs 62 and 63 I andsuitable Wires connect these-spark plugs with the brushes 64 andv 65 which inturn cooperate With a commutator 66. y

l will describe the operation ,of my engine by referenceto Figures 3to`6, inclusivmf vwhich show the pistons 1in the various rposif, i tions which they take during the cycle of operationjjln Fig. 3, the pistons are onV their downward movement relative .to the engine cylinder, and have just Vopened the exhaust port, so as tofrelieve the exhaust Y.

gases.v ln other Words, the expansion stroke has just been completed. It will be noted that the intake port'22 is uncovered by the piston 9 but said intake port is still Vcovered 'by the piston 36 of the pump so that no fuel gas yet supplied toV the cylinders. The exhaust porteris so disposed preferably that it begins to open at about sixtydegrees before the pistonk controlling ther same.`

through' the exhaust ports When'fthey are opened, scavenges the cylinder, Yand as aV matter of fact, produce a partial vacuum therein. 'The pump pistons are timed substantially ninety degreesV in advancev of the engine pistons,Y and. therefore, When thel engine piston reaches the position Shown in Fig.3, the pump 'piston associated therewith has completed its stroke and is justy about cylindersandpermit thevgases in the lpump ,ftofbe transferred into 'the engine cylinders.

Up tothispoint, the pump piston has. y:very slightly ycompressed the fuel gases in` the ipump cylinder :for the reason that the ,'portsf-leading` -to and 'from veach pump cylin- ;der are relatively large, which provides ample clearancenso as 'to y avoid excessive .pressure of the gases. As soon -as .the in- ,rta-ke :port is opened,-t'he gases are ltransfe-rred-into the cylinders 4by the ycontinued -movement offthe Apump piston. The gases #are .there-fore, ftra-.nsferred .into the cylinder `funden comparatively flight pressure: and continuously vdur-ing the entire Vintake gperiod,

#that is, the eremaining time that Q the ,intake l ports "are iuncovered fby the piston. In Fig cf the drawings` 21 have shownrthe piston onnits returnl stroke, and just about to cut off-theintake fport. dit will be ;noted that theipiston ofthe pump closestheintake port ififorgthe pumpdaefore the intakegport leading to the engine cylinders is closed. The

Y pumpftherefore, not -f only l,works under low pressure, but there :is Vno loss through-,pumping-'under pressure, thatiisfdueto the comfpression Vand expansion of-thegases before =they ,are 'transferred to fthe cylinders.

Furthermore, by closing the pump intake '.portnfbefore thewintake ,port vto ithe cylinvit by. cenjtrifugakforce, A. and the fins i or .radiating 'vanes, V34: `will conduct-heat from the 'enderspis closed, I relieve the ported cut-ofi' controllingmember 49 from 'back pressure of lthe `fuel gases.

:In Fige of the drawings, fIhave shown fthe :fuelgasesas compressed and thepistons v*at Athe ,point ready V'for. the ignition of the `gasesA andthe expansion stroke.

-llrom :the above it will be apparent that Ihave provided a `gas engine ofthe twocycle rtype wherein intake and compression `occurs onftlie ont-stroke offthefpiston and expansion and exhaust occurs oni-the instrokey of the'zpiston. 'lt vwill he understood, :of course, :I mean by -the Vstroke of the ;pis =ton, Vthe relative movements of the ,piston ya-ndfeylinder, asin a rotary type-of engine yshown in the drawings,'thepistons do not have any `radial movement. The intakefpo'rt is closed during substantially ,fthe entire period of xexhaust, and -this prevents -any :possible waste of the Yfuel gases and also prevents any premature explosions iof the ffuel gases -when `they enter the cylinders. The lexhaust portriis :closed when the fuel Vgases are :transferredrto :the cylinders, and r this prevents any i over-running i of :the l.fuel 1gasesfandconsequent waste thereof. It may "he, under l certain conditions, v,desirable l to during greater .portion oftheftime thatthe intake port .is open. Y i

-rlihe pump is so proportionedasftosupply i substantially the maxim-um ,required charge for the cylinderslunder ,full load and .slightsly in excess'A thereof, .so thatunderallatmosrplieric conditions, a full Acharge may l be ytransferred to the cylinders.

of the pump, however, -is lsubstantially A,the Ksame as ythat-.of the cylinders -so that the engine responds quickly to the throttle,

sito sayyatfeach strokeof thegpumptsubstantially the entire. charge; contained". in the when the ,throttle cuts down :the supply, the engine responds immediately thereto.

The by.pass ,fpor t 57 in ythe pump ,piston is directly inrea-r of theportioniGOxoffthe f,

wall f of ithe piston 'which covers the intake port, so that the gases'innthis byipassport 57 are gheated and thoroughly v-,va.por ized Vasv 'they pass tothe enginecylinders. s

It will Ebenoted that-:the bypass port (61:1. f above referred to, is at `the-endl of the-fpump cylinder, @and the outer wall ofthis bypass port is formed integral VWitllthe 'radiating vvanes between the pump cylinderfandthe engine cylinder. This bypasspo-rt functions to catch all the liquid fuel nthatcoinesfinto the pump which is notvaporized :and holds gine cylinder toi-the pumpcylinderuso'that the ,wallsoffthisbyipass 61 become `@very hot` and this resultsin gasifyingithe fuel trapped therein. so that it will 4pass on iviththe vapor# 'ized fuelintovtheengine.

It willzbe, note'dffrom; ly that? the sleeve shaft 45y is ra diallyfenlarged f-,andfthe engine casing ,is secured to this sleeveshaftiby bolts a. There are .six offthese bolts, equally spaced yangularlyabout the shaft. The engine 'may i be quickly removed t from its sup# port by removing there bolts 1 and disconnect# Y ing theenginecasng from said-sleeve shajft 45. Itzwill befnoted that this can bedone ,The ,Capacity 1 no i without,V disturbing the; gas connection vtofthe carburetorV or thefelectrical connections. As

a result, the yengine is ,especiallyfr adapted .for

use inautomobiles or for lmoving `wlih-icles, and when yrepairs are needed, 4theengine casing4 may :he removed with all'thejparts-.as-

:sociated therewith and another .substituted;

therefor, lf desired, yso Athat,the .moving 4`vehiclegis notflaid up during repairs. x q v It will be ,.noted `from 42 that :the flanges .or ribs Y24a extendtovaardfthe 4axis of the i rotating engine Casin-gto the annular :,circleiof Ythe:cutoil' so thatrthese ribsin be-V tweentheseveral cylinders' prevent'the en# "haust fromone cylinder passing intoV another.

While Ifhave described my impri'ivementsv 'jas embodied in'an engine of the rotary radial cylinder, type, Vit-k' will Vbe understood that ffrgom certain aspects theinvention may also l'be embodied in an engine'where the cylinders l. f do'notlrotate. Likewise,A the 'invention may cylinderinsteadof'the twin cylinders. vThen be embodied in an engine having a single `.again,while`I have described the-punipr asf `the cycle of the two-cycle engine into sepa`4 s'oci'atedwith each pair of cylinders, which is ofthe reciprocating piston type, it will .be @obvious that from theb'road aspect of thein- Y ventionf, vother types of pumpsimay vbe used.

v It is to be understood that the broad invenition'is directed/to `a vconstruction andar 'rangement of lparts in'afjtwofcycleengine i220. tweeirftlie"exhaust period andthe intake wherein there is axdistinct division line beperiod and wherein the intakeV and compression occurs on Vone stroke of the piston and the Vexhaust and expansion'k on the other strokeot the piston. This, in effect, dividesI rate and "distinct periods similar to the re- *Y sults obtained-'in the foiiicycle engine..

Itis also vobvious that minor changes in the' details of construction andv the arrange-A itmentjof thepartslniay be made without de` parting rfrom thespirit of the invention as *set forth inthe appended claims.

l. ;Having thus describedthe invention, what claim asnew and desire to secure by LettersgPatent, s-` -i i Y -1-.'A-twolcycle gas engine includingl in fcombination, cylinder andV a piston, safid .'pistonland cylinder havingV afmoveinent relxative 'toe'ach other, single means outside oi "fthe cylinder and associated therewith ior i forciblyvsupplyingthev cylinderwith the en'- f rtire charge ot fuel gases' continuously and at relatively low pressureduring the entire intalev period,` andmeans whereby intake and compression occ'uron one stroke of the pis VVIton andexpan'sionfand exhaust'occur n the otherstrokeof the piston.

l-ati'vefto each other,r single means outside 2:-A Ytwo-cycle gasaei'igiii'e including in combination, .a cylinder and al'piston, said pistoni-'and cylinder havingl a lmovement rel- '.ot'the cylinder and associated Vtherewith for 'j forcibly supplyinglthefcylinder with the entire 'charge of fuel gases 'continuously and at .relatively'low pressiii e, duringV the entire intake period, and, means whereby intake oci 'curs subs tantiallyl'after2 the burnt gases have a *SHA1 two-cycle' gas engineincluding in the ycylinders with av supercharge: of fuel gases, continuously and at relatively' low i pressure during the intake period, and means whereby intake and compression occur on one `stroke of the pistonf and expansion and eX-4 haust occur on the other stroke of the piston. 4. A two-cycle gas engine including in Vcombination, a pair of twin cylinders, a pistou for each cylinder, said pistons and cylinders having movement relative to each other,

single means outside of the cylinder and as'-y sociated therewith for forcibly supplying the cylinders with an excess of fuel gases,con

tinuously and at relatively low pressure durf ing' the intake period, and means whereby] 'intake occurs substantially after the burnt gases have been exhausted from the cylinder.

5. A two-cycle gas' engine includingin combination', a rotatable casing, a plurality.; l

of radially disposed cylinders carried by said i' casing, a fixed crank, a power piston for each cylinder, and a .piston rod for eachV pistonl connected with said crank, and n'ieansrcof operating with said power pistons to close 'one cylinder port while the other cylinder port is open wherebyintake and compression occur in each cylinder on one st-iokeof the f piston associated therewith, and expansion andenhaust occur on 'the other strokefof the piston` 6. 'A two-cycle gas engine includingiii combination, a rotatable1casing,'a plurality of radially disposed cylinders lcarried by said casing, a fixed crank, a power piston for each cylinder, anda piston rod for each Vpiston connected with said cranlgmea'ns co operating with said power` pistons to i close one cylindenport while the other cylinder port is open whereby intake and fconiIn-ess'ion occur in each cylinder ono'ne stroke ot the piston associated therewith and ciziian'sion ios and exhaustV occur on the o'tlierstroke of theV piston, and means whereby said cylinders *are tired iniy succession.' as the' casing 'rotatesf 7; A two-cycle gas engine including niV combination, a rotatable casing, a plurality Of radially disposed cylinders carried by said casing, a Vtix-ed crank, a pow-er piston .foreach cylinder, and a piston rod foreach;

piston connected with said crank, and means cooperating with said power pistons to close onecylinder port while the other cylinder port is open wherebv intake occursin each cylinder substantially after the Aburnt gases liav'e been exhausted from the cylinder.

8. A Vtwo-cycle gas engine including` in combination, a rotatable casing,a plurality of radially disposed cylinders carried Yby said casing, a iixed crank,' a power piston for each cylinder, a piston rod for each piston connected with lsaid crank, means cooperating with Vsaid ypowerpistons to' close one cylinder port while the other cylindery port is open'whereby intake occurs in each cylinder substantiallya-ftei' `the burnt gases have been iso@ bureted fuel gases-continuously and at relav tively low pressure duringthe entire intake llt) pee

piston. .-10.- A' two-cycle nig rotates.

Vperiod of the respective cylinders, and means whereby intake and compression occur in veach-cylinder onone stroke of the piston associated therewith and expansionf and ex liiaust occur on thev other stroke of said ,s engine including in combination, a rotatable casing, a plurality of radially disposed .cylinders Acarried thereby, a piston for eachcylinder, a stationary crank, a piston rod foreach pistonrconnected to said crank, means outside` of the cylinder fand associated y.therewith for forciblysupplying said cylinders with anexcess of carbureted fuel gases continuously and at rela# tively low pressure during the entire intake per-iodioftherespective cylinders, and means ywhereby `intake occurs in each cylinder substantially after the burnt gases have'been exhausted from the cylinder.

111 A two-cycle Vgasy enginemincluding in combination, a rotatable'casing, a plurality of .radially disposed cylinders carried thereby, a piston for eachcylinder, a stationary crank, a piston rod for each piston connected to said crank, means outside of the cylinder and associated therewith for forcibly supplyinfv said cylinders with'an excess of carbureted fuel gases continuously and atrelatively 4low pressure during the entire intake periody ofthe respective cylinders, means wherebyintake occurs in each cylinder sub- I stantia-lly after the burnt gases have been exhausted from the cylindeig'and means for tiring the cylinders in succession as the, casl' 12. A two-cycle gas engin-eincluding in combination, rotatable casing, a plurality of radially disposed twin cylinders carried thereby, said twin cylinders' being connected at their outer. ends, one ofv said cylinders having an intake port, pistons in said cylinders, a stationary crank, and piston rods connectingl theV pistons, to the stationary crank, and means independent ofthe piston -forelos'ing the intake port uncovered by the piston during theexpansionv stroke Vof the piston.

' 13.? A twoe-cyclevgas engine including in ,combina-tion, ai rotatable casing, a plurality -of radially disposed twin cylinders carried thereby, said. twin cylindersbeingf connectd at their outer ends, one of said cylinders having 'an intake` port, pistonsfinsai'd cylinders. a stationary crank', piston-rodsc'onnesting the pistons to thestationary crank, means` cooperating with theV pistonfbut inl dependent thereofY for maintainingthe intake port closed during'tlieent-ire expansion stroke of the piston. means-associated with each twin; cylinder for supplying` fuel gases .thereto coiitinuously and at' relatively"` low pressure during` the entire intake period, and

means for firingsaid twin cylinders in succession as theicasing rotates.

14--= A twocycle gas enginefincluding in fcombination, a rotatablel casing, a` plurality of 1radially disposed twiircylinders k'carried thereby, said twin cylinders ,beingV connectedV Y at -their'outer ends,l one of saidv cylinders havingv anintake port, pistons 'in said 'cylinders, a stationary crank, piston rods'` con-V necting the pistons tol the Vstationary crank,`

means independent of the piston for? closing the intake port uncoveredubyfthepistoniduring theexpansion stroke ofthe piston, and

and lat relatively lowy entire intake period.

pressure during the l5. A two-cycle gas engine i'ncludingin combination; a-rotatable casing,- a plurality Vof radially disposed twin cylinders carriedI thereby, said twin'cylinders being'c'onnected at their outer ends', one ofsaid cylinders havrh the pistons; to the'stationary -crank, means Vindependent of :the piston vfor closing the intake port uncoveredbythe piston-during vthe .expansion stroke ofthe piston, means associated with each twin cylinderfor ysupplying fuel lgases theretocontinuouslyE and,v

at relatively low pressure during the entire intake' period, and means lfor firing said cylinders in succession as .the casing-4 rotates.

- means associated with eaclrtwin cylinder for Vsupplying fuel `gases .thereto continuously ling' an intake port, pistons-in-said cylinders'. a stationaryvv "crank, piston :rods connecting 16.A rotary gas enginey includingin combination, a rotatable casing, a plurality of radially disposed twin;cylinderscarried` by said rotatable. casing, oneofsaid twin cylinders having Van intake port `andthe other an exhaust port, a piston for-:eachvcylinder, said ports being disposed so as to be uncovered bythe pistons,Y and meansindependent of the pistonsy land cooperating therewith wherebysaidintake port is closed during .the expansion stroke andthe exhaust port is closed during the compression. stroke of the pistons.

17. Agrotary gas engine including in coi'nbination, a rotatable casing, va `pluralityof radially disposed twin cylinders carried said rotatable casing, one of said twin cyl Vinders having anintake port and the kother an'exhaust port, a piston foreach cylinder, said ports beingY disposed so as to be uncovered bythe pistons,vineans for'maintaining the intake port closed while the exhaust ,1.310 *if port ris open, and means for'i'elosingthe" A yexhaust -port 'while-l the intake port is open.

Y S18. Arotary/gas engine including in combination, 'a rotatable casing,A a plurality n of radially disposed twin cylinders, carried by `said vrotatable casing, one ofsaid twin `cyl- V' finder's'havingan intake port and the other "an, exhaust port',y a piston for each cylinder, i 'j ksaidgports VVbeing disposed so as to-be uncovered 'by the pistons.` means independent of the pistons. and eooper'ating therewith whereby saidlintake port is closed during the v'eiqiansion' stroke andthe exhaust port .is Y closed-duringfthe,compressionv stroke of the' t istons,gand*means associated with each yof l the'twin"cylindersfor supplying fuelA gases Y period A continuouslyaand atgrelatively `low pressure to" the Jeylinders during Y the entire intake' z 19.V A .rotary gasengine including inA combination, `va rotatable ,easing,j'aplurality of `radially disposed twin cylinders carried by said rotatable casing, one v"of said'twin cyl- Qi'inders having an'intake port and the other 'anv exhaust port, a' piston for eachzcylinden said vports being disposed so as Vto be un- V.covered-:by the pistons,` means independent fjof. ltheV pistons andv cooperating therewith i` @whereby said intake-port is closed during'the expansion stroke andthe exhaust port is ,f closed during the compression strokeof the VVfpistons-," means associatedl with each Vof the @twin cylinders for supplying fuel 'gases conf f `tinuously, andratrelatively Vlolwfpressure to thecyli-nders'during the entire-,intake lp e- A riod, and means z forv firing the cylindersin succe's'sion 'as the casing rotltGSv i :Y: 20.A-rotary gas engine includ-ing incom-i'- f bination,'a rotatable casing, aV plurality ofV f radially disposed twin cylinders carried by Vasaidfrotatablecasing, lone ofV said ltwinfeylik `-iiiders having an intake vvport and the other l :an exhaust ;port,,a piston for each cylinder,

said portsfbeing disposed so `as to vbeV unj.coveied by thefpistons,`means for'inaintain- .ingthe intakeport closed 'while the exhaust portxisLopen,V means, for.- closing the' exhaustA port while the intakeport is open7 and means Vassociatedwitheaeh 'of the twin cylinders ffor.. supplying said-cylinders with fuelgases i continuously and atA relatively low pressure bythe pistons,lmeans for maintaining the i-ntakeport closed whilefthe exhaust portis -open, means for closing the'exhaust port,` Y -while the intakeport isy open, means associated with each of the twincylindersffor' sup.v

` enginel cylinder is closed' plying said cylinders with fuel gases continuously and atV relatively lowpressure during thee'ntire intake period, andmeans for firing said cylinders in succession as the casing rotates.

22. A engine including in vcombination, a cylinder having an intake port, a pis- Y ton'adapted'to uncover said intake port at the inner end of its stroke, a puin'pincluding a cylinder connected to Isaid intake port,

`and a pumping member having a by-pass port therein adapted to cover the intake'port while said piston'of the engine cylinder is von its expansion stroke and adapted toA connect the'i'piiinp cylinder with the intake port while the intake port is open on the coin-V pression stroke of the engine cylinderfpissaY ton, the capacity of the pump cylinderbeing' .i

greater than the capacityof the cooperating power cylinders,permitting a supercharging of 'saidl power cylinders.

23. A `gas engine includingfinfcombinaton adapted' to uncover said kintake port at vthe inner end ofits stroke, a pump cylinder connected with said intake port, a lreciprotlierein adapted to cover the intake port while the saine is iin-covered by the piston` on Vits ,expansion stroke and to connect the.

pump cylinder with the intake port while the intake port is open'on the compression stroke-of the engine piston,thecapacity of the pump 'cylin'c erbeingV greater than the ftioii, a cylinder having an vinta-ke port, a pis- 00 I eatingV pump piston having a by-pass port i capacity of the cooperating power cylindersf permitting a superchargingof said power cylinders.. 24. A gas engine including in combination. a cylinder having an intake port, a pisj ton adapted to uncover said intake port atv the inner end of its stroke, 'a pump cylinder connected Vwith saidl intake port,A a reciproeating pump 4piston having 'apby-pass port therein adapted to cover the intake port while the saine uncovered by the piston on its expansion stroke and to connect the pump cylinder with the intake port while the intake portis openonthecompression stroke of' the vengine pistomsaid pump cylinder having anintake port adapted tobe covered.

by thepiston before the intaker port of the 25A. A asr engine including. iii-combination, twin cylinders, one of which hasV an in take port and the other an exhaust port, pistons for'saidvcylinders radapted to vuncover the intake Y, and `exhaust ports, respectively,

so that said pump piston covers the intake Vat the inner ends of Vtheir strokes, a pump I l cylinderconnected with said. intakeport, a; pump piston having ahy-pass port disposed `1-25 port while the intakeport is uncovered by J ftheA piston on its expansion stroke, said bypassportin the pump piston connecting"thel Y pump cylinder With 'the intake port While said intake port uncovered by'the piston ot the engine cylinder. v Y 1.26. 'A gas engine including in combina'- tii'on,'t\vin cylinders, 'one of Which has an intakeport and the other an exhaust port, pis- 'tonsft'or l,said cylinders adapted to uncover the intake and exhaustports, respectively, at the -inner ends of their strokes, a pump cylinder Connected With said 'intake port, a ,pump piston' having a by-pass port disposed so that'xls'aid pump piston covers the Vintake port While the intake port isv uncovered by thepiston on'itsexpansion stroke, said bypass port' in Vthe pump piston `connecting the pump vcylinder lWithfthe intake port While ls aid'int'ake po'rt is uncoveredlby the piston of he engine cylinder, and Vmeans inde- Apendent oi'thefpistons for closingftheexhaust'fpo'rtvvhile "said intake port is uncovered l'by the pump piston.

V27. A gas engine including in combination, tvvin cylinders, one of which has'a'nin- "takeportand the other an exhaust port, pistons forsaid cylinders ad'aptedjto uncover the, intake ,and "exhaust ports, respectively,

fat uthe inner -ends of 'their' strokes, ra pump cylinder connected'vvith'said intake ort, a .pumpjpiston having'a by-pass port disposed `so, that A"saiclpiilfrip -'piston covers the intake port n'fliileftheintake port is uncovered by the piston'on itsexpa'nsio'n stroke, saidby- .pass port, in,v the 'pump piston connecting the pump "cylinder vvith the intake port `While said4 intake port is uncovered by the piston ofthe engine cylinder, vsaid pump cylinder havinganintake portdisposed so as to be covered bythepump piston prior'to the Vclosl "ingof the intake port.

v28. 'A gasengine including in combination,'t'vv1n cylinders, oneof which has 'an 1n- -take port'and the other an exhaustpornpistons for said cylinders 'adapted v-to uncover A the` intake and exhaust ports, respectively,

atfth'e inner ends of their strikes, a pump cylinderconnected With said intake port, a

. .pumpjpiston having a by-pass port disposed so that said, pumppiston covers the intake .port ,While the intake port is uncovered by the piston on its expansion stroke, said bypassport infthe pump kpiston connectingt-he fpump cylinder With the intake port While 'said-'intakeport' is uncovered by the piston of the engine cylinder, means independent fof v'the pistons `for closing the exhaust port ."vvhile said intake 4port isuncovered by 'the ,pump Apistonpsaid ,pump cylinder having an vintake port disposed so as to be covered by the 4 pumpr piston before said intake port to the engine cylinder is closed.

. A gas engine including in combination, acasing adapted lto rotate, a plurality of radially disposed 'cylinders carried byfsaid,

casing,y a .pump vpiston associated yvith each cylinder, a port."extending,from the pumpV` inders.

cylinder to the engine cylinder, a piston the engine` cylinder adapted -to uncover said Y port, 'a pistonin theE pumpI cylinders adapted to' cover said "port `and' liavinga'bylpass p'ort formed therein'vvhereby thekp'ort i'sin-o'pen communication with the pump cylinder' 'only While said port is uncovered 'bythe piston on its compression "stroke,'the capacityothe ity of v'the cooperating p'oiver"cylinders ,per

pump cylinder beinggreaterfE than thecapaco mitting a supercharg'in'g of said povvercylf 30. A f gas 'engine including `'in combination, a casingadapted to'rotate,"af'plurality :of =radially disposed cylindrs carried by said'casing, a Vpumppiston associated vvith veach Ycylinder, 'a fport "extending from 'the pump 4 cylinder 'tol the engine cylinder, -a lpiscoversaid port, a piston the p'uinplcylin'f d'ersadapted'to cover said portand havingfa by-pass lport formed ztherein vvh'ereby Kthe port'iis in open communication KWith "the pump cylinder only vvhile said portis luncovered the lpiston on 'its compression stroke, said Apump cylinder liavin'gfan "inf take portfadapted to "be vcovered E"said piston er the pump herewith-e pta lea-diag :having an exhaust port, saidports beingfuncovered 'by the pistons at the vkinne;1 VV'ends ci' their strokes,'ia punip cylinderfassociated with Aeachpair of engine lcylindersl and having direct connection'ivvith the 4intake'port, la pistonflfor the cylinder f"adapted tto coverthe intake port vvhile the"`n"iIe piston uncovers Lthe same 'on its expansion stroke, said pump piston `having "a 'by-pass port for Vconnecting the pump cylinderv with the f en# 'gine cylinder While said intake iport isop'en on the compression 'stroke dfthe engine piston, the capacity of the pump cylinder being'greater than the cap' aeity of the coigieifat-y ing V'po'vve'r cylinders, permitting "a "super-p 'charging of `said' power cylinders.

32. -AY gas f engine includingv 1in Icoi'nbin'ation, `a rotatable casing, a "plurality f'radially disposed cylinders carried 'by' said feasing, said cylinders being arranged in pairs and connected :at their 'outer ends, "a piston for each cylinder, one of said cylinders "havlingA 'an intake 'port and the other c'yliir'id'ervv having `an exhaust fport, vsaid xports being ,'uncovered` by the pistons `at 'the {inner iends of vtheir strokes, a 'pump cylinder vassociated With each pair'o engine cylinders ano'lhav#y ing direct connection Withthe intake `p ort,{a

piston Ifor the Apump*cylinder adaptedftd 10orv cover the intakeport While the engine piston juncovers the; same on `its expansion stroke, said ,pump pistonhaving aby-passzportfor conneating the pumpcylinder with the en- Vgine ylincler-vvliile said intakeport is'open onithe compressionstrole yof the enginefpis- ,rffi Iand 'connected attheirfouter ends, a piston @for each-cylindenoneof said cylindershaving en intake port and/the other-'cylinder having an exhaust'port, .said ports .beingun- V covered by lthe pistons at the inner Vends ieir strokes, a pump cylinderassociated f lvvithieaeh pair vofengine cylinders'V and 'having direct conneotion :with the intake port,'a Y .piston-for the pumpA cylinder adaptedto covertheintake port While the engine piston uncovers thefsameon-its expansion stroke,

Y gine cylinder W 'ile sai intale'portis open ,onthe'.jcompressionfrstroke Vof 'the engine i 30; piston,andY nieanslindependent iof the pistons Q; foiffclosing theexhaust. port during the" coinvpressionjstroke of the pistons;` Y. f Y 34.A- gas engineV including in combinaf v tion,l ia1r otatable casing, a plurality of. radially f disposed cylinders' .carried by said i cas- Y ing,

i 'j 111;011eaehvcylinder,4 one of said cylinders hav- .ing Van intakepport and the other cylinder having an exhaustrporajsaid Dports being un- ;Goveredfby the Ypistonsratfthe inner ends of '."thleir strokes, a pump cylinder; Vassociated with' ,eachfp'air' of engine cylinders and havfing,` direetfeonnection With the intake port, a pistonffor theV pump cylinder adapted to i my, c c.. v

uncoversfthe saineon its expansion stroke,

p "ojeeting from said easing, afpump cylin- @fossile Cyh'n Ye u I' rpiston-prior tothe'Y closing of the intake port ing, `s a id cylindersbeing arranged Yin pairs isaidpump piston having ahy-pass port vfor V connecitingthe umpc linder vvithfthe en-vV fsaidpoeket being disposed on the side ofthe saidl cylinders beingarranged in pairsA vconnected at their outer ends, a ypiston.

'vcover'the intakeport while the .engine piston iivgcylinders'- radially, disposed 1 carried by and @der 'associatedfvvitlii eafohffof the twin cylin- 1 v dersjicarriedby"and projecting :from said 1 said-" piirnpfcylinder and said enginev rs fbeing' cast together and separated' i: from"eachother'toy permit a free circulation 'outer end, "a pipe for each intake port ex-zVVV tending `to and connecting with the easing," f" y 7o a stationary ported member Within 'the casing connected with the supply and disposed Y' so yas to connect said pumps insuceession With the supply.

36.A gas engine vincluding 'in combination, a rotating casing, a plurality' of 'radi-` ally disposed cylinders, said `casing having ran exhau'stchamber connected With the ex-V haust por ts,'-aV stationary member for receiving the exhaustk gases having portions overlying the lcasing con'tainingfthe exhaust chamber,n said casing having' a series of grooves facing outwardly against the overlying stationary Ineiiibers,v and expansible sealing rings freelylocated ink said grooves Ywhereby ther rings engage the stationary member andare held from rotation as the engine rotates.

Y 37. A gas engine including combination, i

e rotating casing, aipluraiity of radially 90.

disposed cylinders, a pump cylinder associated With eaehengine cylinder, radiating fins connecting the pump cylinder and engine cylinders, said pump cylinder having a i bypass forming a pocket into which any 'v liquid 'fuel'is carried bycentrifugal force,

pump'fcasing adjacent the radiatingVV fins whereby the heat`from the engineeylinder a fixed crank locatedwithin said casing, a

rotating shaft in alinement with said stationary shaft, and having 'a radially extendy ing portion, and means for-'bolting said radially-.extending portion of the rotating Shaft to thecasing. Y

Y 39. A' gas engine includingv in combina- `A Y tion, a rotating casing, a plurality of radially disposed cylinders, a stationary shaft having a fixed crank locatedwithin said casing, a rotating shaft having the engine ignif tion distributing device mounted: thereon,

said rotating shaft being in alinein'eiit with` said' stationary shaft, and having a radially Y extending portion, and means for holting said radially extending-portion of the "'ro- Y v tating shaft to the casing, said rotating'shaft jhaving a fuel passage' therethrough lea-ding to theenginecarburetor, and Velectrical distributing devices supported by-said rotating shaft. i Y Y 40. A'gas engine including a rotating casing 'having a plurality of radially disposed cylinders, said cylinders having' Vexhaust ports, a stationarylchamber adapted to reing'r ribs r for preventing the l ,exhaustmgases `ceive the exhaust gases froinfthe exhaust port, saidcylinders having inwardly extend- :from passing from one cylinder into another.v

41. A rotary gas engine including a easing, a plurality of pairs of radially disposed power Cylinders, a plurality of supercharg- 5 ing pump cylinders, arranged one for each pair of power cylinders, a earlouretter,V a hollow sleeve shaft connecting said earburetter with each pump cylinder, and means associated with each pair of power cylindersv permit-ting each of said pump cylindersV to supply the respective powereylinders with pre-heated fuel gas'continuouslyand` at al relatively low pressure during the entirev in.- take period. t Y I j In testimony whereof, I afliX my signature.; Y

,BENJAMIN FRANKLIN AUGUSTINE. 

